Castrol 12612-12PK Axle Limited Slip 80W-90 Gear Oil - 1 Quart, (Pack of 12) Recommended for service fill of all limited slip differentials in passenger cars and light trucks calling for SAE 80W-90 and API Service GL-5 specifications Recommended for applications calling for Ford ESP-M2C154-A, GM 9985290 Recommended for service fill of conventional and limited slip differentials calling for API Service GL-5, SAE 80W-90 gear oil Meets API GL-5 requirements